<?php
function send($file){
	if (file_exists($file)) {
    	header('Content-Description: File Transfer');
    	header('Content-Type: application/octet-stream');
    	header('Content-Disposition: attachment; filename='.basename($file));
    	header('Content-Transfer-Encoding: binary');
    	header('Expires: 0');
    	header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
    	header('Pragma: public');
    	header('Content-Length: ' . filesize($file));
    	ob_clean();
    	flush();
    	readfile($file);
    	exit;
	}
}
?>